diff --git a/proj/CMakeLists.txt b/proj/CMakeLists.txt
index 1c8d9ee..9ea88d5 100644
--- a/proj/CMakeLists.txt
+++ b/proj/CMakeLists.txt
@@ -7,11 +7,13 @@ file(GLOB subdirs RELATIVE ${dir} ${dir}/*)
 
 foreach(subdir ${subdirs})
     if(IS_DIRECTORY ${dir}/${subdir})
-        set(buildFlag build${subdir})
-        option(${buildFlag} "Build ${subdir}" ON)
-        if(${buildFlag})
-            message("subdir: ${subdir}")
-            add_subdirectory(${subdir})
+        if(NOT ${subdir} STREQUAL "CMakeFiles")
+            set(buildFlag build${subdir})
+            option(${buildFlag} "Build ${subdir}" ON)
+            if(${buildFlag})
+                message("subdir: ${subdir}")
+                add_subdirectory(${subdir})
+            endif()
         endif()
     endif()
 endforeach()